Quantity: The first thing to consider while getting an RV caulk should be the quantity included in a given pack. This is due to the reason that you will most likely need a lot of caulk in most cases. Thus, almost all RV caulks include 10 oz quantities which should be good enough for most users. Ideal Surfaces: As you would know, there are all kinds of materials used in any given RV in different places. Because of this, you would want your RV caulk to stick to all of them. It can include ideal surfaces like wood, aluminum, vinyl, fiberglass, metals, and more. Curing Time: Since caulk is essentially a glue, you also need to allow it to cure after you have applied it on a given surface. Because of this, make sure to check the curing time of a given RV caulk as a 3 day curing time is going to be much handier than a 5-day curing time.
Even though these factors are highly important, there is still a lot more to keep in mind while getting the best RV caulk. Therefore, all the various RV caulks stated here also have their important details and features explained along with an extensive “Buying Guide” so that you can pick the best RV caulks by end of this list.
Best RV Caulks in 2023
Best RV Caulks Reviews
1. Dicor 501LSW-1 Epdm Self-Leveling Lap Sealant-10.3 Oz
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Dicor is a highly popular brand of industrial adhesives that generally offers quite affordable options including its RV caulk stated here which can be a great budget-friendly option. The Dicor 501LSW-1 RV caulk is present in the 1st position in this list since it can be a great entry-level caulk option for many. Despite being an affordable RV caulk, you get a total quantity of 10.3 oz with it allowing you to easily use it on a lot of joints in your RV. Speaking of using this RV caulk on joints, it can be used on wood, metal, vinyl, fiberglass, concrete, and more. It is also compatible with EPDM and TPO sheeting. Despite being an affordable RV caulk option, you get a 2-year warranty with it making it fairly reliable for long term usage. Best Features:
Comes in a 10.3 oz quantity tube Ideal for wood, metal, vinyl, fiberglass, concrete Offers a 2-year warranty
Pros:
Affordable RV caulk Works with EPDM and TPO sheeting too Decent warranty for the price
Cons:
Curing time can be a bit long
2. 3M Marine Adhesive Sealant 5200 (06501) 10 fl oz
If you are familiar with industrial-grade adhesives and other chemicals, then you must have surely heard about 3M in the past since it offers a wide range of high quality options including RV caulks. 3M’s 5200 06501 RV caulk is present in the 2nd position in this listicle as this happens to be a high-performance caulk ideal for heavy-duty usage. Other than offering a strong bondage for your joints to prevent leakage, you get a quantity of 10 oz with this RV caulk. A great thing about this 3M RV caulk is that you get a curing time of 5-7 days with it which is quite manageable while repairing your RV. When it comes to applying this RV caulk on your RV joints, it can be used on wood, metal, vinyl, fiberglass, concrete, etc. Being a popular and reputable brand, 3M also includes a 1-year warranty with it. Best Features:
Comes in a 10 oz quantity tube Ideal for wood, metal, vinyl, fiberglass, concrete Offers a 1-year warranty
Pros:
High-performance RV caulk Works with various surfaces and materials Fairly fast curing time
Cons:
Flexibility of the bond could have been better
3. RV Flex Repair Self Leveling Caulking Lap Sealant
Ziollo is a high-end solution when it comes to RV caulks and seal up all the various joints of your RV since it offers high quality RV caulk along with various handy accessories. This Ziollo RV caulk is present in the 3rd position in this article because it is the perfect option for heavy-duty usage. For allowing you to easily seal up a lot of joints, Ziollo offers a total of four tubes of 10 oz RV caulk each. These tubes come included along with a sealant tape and a roller. You can use this caulk on a number of common surfaces found in your RV including rubber, fiberglass, metal, TPO, and a few others. Since this RV caulk is made for heavy-duty usage and should last for a long time, Ziollo includes a lifetime warranty with it which is to be expected at its given premium price tag. Best Features:
Comes in four 10 oz quantity tubes Ideal for rubber, fiberglass, metal, TPO Offers a lifetime warranty
Pros:
Excellent for heavy-duty usage Lifetime warranty for peace of mind Includes handy accessories in the box
Cons:
A bit on the expensive side
4. Dicor – 551LSW-12 White Non-Sag Roof Lap Sealant – 10.3 oz. Tube
Dicor also offers other affordable options when it comes to RV caulk that can also be a viable option for many because of which we have mentioned another one here. The Dicor 551LSW-12 RV caulk is another entry-level caulk offering from Dicor which can be a great affordable option for many. Similar to the previous Dicor RV caulk given here, this one also includes a total quantity of 10.3 oz inside the tube. Unfortunately, because it is an affordable RV caulk, its ideal surfaces are a bit limited since it can only be used with metal, rubber, and fiberglass. Thankfully, just like the previous Dicor RV caulk given up above, this one also offers a 2-year warranty for your peace of mind. Best Features:
Comes in a 10.3 oz quantity tube Ideal for metal, rubber, fiberglass Offers a 2-year warranty
Pros:
Budget-friendly RV caulk Curing time is decent for the given price Good quantity at an affordable price
Cons:
Limited ideal surfaces for application
5. 3M Marine Adhesive Sealant 4000 UV, PN06580
We have yet another RV caulk offering from 3M given in this listicle since it makes high performance and high quality industrial adhesives that can also be used in your RV. 3M’s PN06580 RV caulk is one of the best options out there if you want something that cures quickly and can be used for easily and quickly fixing any leaks. As you would expect, this RV caulk from 3M also comes in a tube of 10 oz which should be plenty for most use case scenarios. Other than being a fast cure RV caulk with a 15-20 minute skin time, it is also highly versatile. This is due to the reason that it can be used on wood, fiberglass, metal, plastics, and other surfaces. As you saw with the previous 3M RV caulk, this one also offers a 1-year warranty. Best Features:
Comes in a 10 oz quantity tube Ideal for wood, metal, fiberglass, plastics Offers a 1-year warranty
Pros:
Quite a fast curing time Works on various surfaces High-performance RV caulk with high strength
Cons:
Slightly on the expensive side
6. Eazy2hd RV Self Leveling Lap Sealant
Eazy2hd is one of the well-known brands of RV accessories, which provides high-quality RV/camper-related products at an affordable price range that offers the best performance. This RV self-leveling lap sealant is a great option that produces a secure, strong seal with the edges of the roof, air vents, and others. It is easy to apply in both dry and wet conditions by using caulking guns. It is compatible with EPDM rubber roofs, TPO sheeting, and most RV roofing material, along with adheres to galvanized metal, vinyl, aluminum, fiberglass, and concrete. It effectively blocks the dust, dirt, and moisture on the applied surfaces. This white RV lap sealant comes in a pack of 4 of 300 ml each that offer premium grade UV stabilized to last longer, and it has working temperatures of -40°F to 200°F. While its shelf life will be at 0° – 40°C at normal temperature for 16 months. It is specially designed for the road to withstand the outdoor elements, vibrations, shocks, and regular wear of travel. With its breathable and waterproof seal, the caulking sealant avoids leaks and won’t shrink to stay flexible. In case, if you’re not satisfied with this RV lap sealant, then the manufacturer offers a 6-month money-back guarantee. Best Features:
Comes in a 40.5 oz quantity (pack of 4 each 300ml). Ideal for metal, rubber, fiberglass, aluminum, and concrete Offers a 6-month money-back guarantee Can be applied in dry or wet conditions Withstand outdoor elements, waterproof, and breathable.
Pros:
Creates a strong and secure seal Easy to apply Multipurpose that works on various surfaces Blocks dust, moisture, and dirt. Budget-friendly RV caulk
Cons:
Limited warranty period The flexibility of the bond could have been better.
7. Sashco 10016 10.5oz 10016 Big Stretch Caulk 10.5-Ounce
Sashco is a fairly new brand of industrial-grade chemicals and adhesives which even includes an RV caulk that can be a great option for buyers on a budget. The Sashco 10016 RV caulk is the cheapest option present on this list making it a great budget-friendly option for many buyers. Despite its given affordable price tag, you get a standard capacity of 10.5 ounce which is on par with more expensive options. Even though this Sashco RV caulk is quite affordable it still works perfectly on materials like wood, metal, fiberglass, plastics, and much more. And just like more expensive options out there, this RV caulks also includes a decent 1-year warranty. Best Features:
Comes in a 10.5 oz quantity tube Ideal for wood, metal, fiberglass, plastics Offers a 1-year warranty
Pros:
Highly affordable RV caulk Standard quantity for high value for money Works with various materials
Cons:
Curing can take a while
8. Sikaflex-221, White, Multi-purpose Sealant 10.1 fl. oz
While you may not have heard about Sikaflex in the past, its RV caulks are certainly quite decent in terms of their performance as well as value for money. Sikaflex’s 221 RV caulk is one of the only fast curing caulk options out there that comes at a fairly justified price tag. Other than being a great performing RV caulk, you also get a decent quantity of 10.1 oz included in its tube. But the best thing about this RV caulk is that it cures quickly and still allows you to use this caulk on surfaces like wood, metal, paint, ceramic, and plastics. Unfortunately, being an entry-level RV caulk, it only offers a 3-month warranty. Best Features:
Comes in a 10 oz quantity tube Ideal for wood, metal, paint, ceramic, plastics Offers a 3-month warranty
Pros:
Cures quite quickly for the price High value for money RV caulk Decent quantity in the tube
Cons:
Limited warranty period duration
9. ToughGrade Self-Leveling RV Lap Sealant
ToughGrade can be a great option for many of you who are looking for RV caulk for any kind of large scale project that requires a lot of caulk for fixing leaks and joints. This ToughGrade RV caulk is one of the best options if you are looking for a large quantity of RV caulk. To be exact, you will find a total of 4 tubes included in the box where each one of them features 10.3 oz of caulk resulting in a total 41.2 oz of RV caulk. Apart from offering a large amount of RV caulk, this caulk is also fairly versatile since you can use it on wood, vinyl, metal, and concrete. Talking about its warranty, you get a 1-year long one which is the same as most others. Best Features:
Comes in four tubes of 10.3 oz quantity each Ideal for wood, metal, vinyl, concrete Offers a 1-year warranty
Pros:
Large amount of RV caulk Fairly high value for money Decent warranty period
Cons:
Not the most flexible bonds
10. Geocel 2320 Gutter Sealant
Here at the last position of this list, we have Geocel and its RV caulk that can be a viable option if you are looking for caulks made for heavy-duty usage. Geocel’s RV caulk 2320 gutter and narrow seam sealant is a great option if you want a caulk that is used for a long period to have reliably strong joints. Also, you will get 10.3 oz of this caulk in this tube, which is plenty in most cases. It is a single component, semi-self-leveling, elastomeric, and high-performance tri-polymer sealant that is specially designed to avoid air or moisture passage through the seams or small joints. This adhesion has excellent ultraviolet resistance that can be used on various building surfaces, even on oily, damp, or dry surfaces. It is compatible with Asphalt shingles, glass, masonry, wood, concrete, vinyl, sheet metal, and other common building substrates. Yet not recommended to use for joints larger than 1/4 X 1/4 inches. It comes with a pack of 3 with 10.3 fluid ounces tube of each. Geocel offers a 5-year warranty on their RV caulks. Best Features:
Comes in a 10.3 fluid ounces quantity tube Offers a 5-year warranty Ideal for Asphalt shingles, glass, brick, wood, concrete, vinyl, or sheet metal. High-performance tri-polymer sealant Ideal to apply on dry, damp, or oily surfaces
Pros:
Perfect semi-self-leveling for strong and flexible bonds. Budget-friendly gutter sealant Comes in a pack of 3 Exceptional waterproof and UV resistance. Ideal option for most common building substrates
Cons:
Limited ideal surfaces for application.
Buying Guide for the Best RV Caulks
Whether it is currently raining or snowing in your area, you would not want water to get inside your RV. And while all RVs have watertight joints, over a long time period, these joints can get loosen up and possibly leak. Fortunately, fixing such leaky joints is fairly easy with something like the best RV caulks present in this list. While we have also given their important specifications and features, some of you might be still confused. In that consider, checking out the following detailed buying guide for the best RV caulks:
Quantity
If you are applying caulk on the joints of your RV, then you will most likely need a lot for the same. Thus, it is always a great idea to check the quantity of the RV caulk that you are getting. Usually, you will find RV caulks to come in a pack of 10 oz that should be decent enough for some time.
Ideal Surfaces
Before you go ahead and start using your RV caulk to prevent leakage in your RV, you also need to consider the surface on which you are applying your RV. This is due to the reason that any given RV caulk can only be used over specific surfaces. It may or may not include surfaces like metal, wood, vinyl, fiberglass, concrete, and more.
Curing Time
Once you have applied caulk on a given surface, it also needs to dry up and cure before it can start preventing leaks. But to ensure that this drying up process does not take too much time, you should also check the curing time of your RV caulk. For example, an RV caulk with a 3 day curing time is going to be much more practical than an RV caulk that has a 5 day curing time.
Warranty
After you have applied caulk on your RV’s joints, you would want it to last for as long as possible. For the same, checking the included warranty of your RV caulk can also be a great idea. While most RV caulks come with a 1 year long or a 2 year long warranty, there are also other options out there which may include a lifetime warranty for your peace of mind.
Conclusion
Similar to any other vehicle or your home, you would also want your RV to be completely waterproof without any leaks. Even though all RVs have waterproof joints, they might start leaking after some time. To fix up such leaky joints in your RV, consider getting one of the best RV caulks stated here. And to help you pick the right RV caulk, all these various RV caulks also have their major specifications and details listed alongside a complete buying guide. And based on all these details, here are our ideal picks for the best RV caulks:
Starting with one of the best value for money options, the ToughGrade RV caulk can be a great large quantity option. Despite its given affordable price tag, you get a total of 4 caulk tubes in the box where each one offers 10 oz quantity resulting in a total of 40 oz of RV caulk. As for its application, it can be used for edges, vent cover, pipes, air conditions, and more. But if budget is not an issue for you and you want something ideal for heavy-duty usage, then the Ziollo RV caulk can be a great option for you. The primary benefit of going with this RV caulk is that you get a lifetime warranty with this caulk and tape combo. Talking about the caulk, you get a total of 40 oz of RV caulk in the box thanks to its four 10 oz RV caulk tubes. In case you are on a tight budget, then you can consider checking out the Sashco 10016 RV caulk. Even though it is extremely budget-friendly, you still get a standard quantity of 10 oz with this RV caulk as well. And unlike most other RV caulks, this Sashco one also offers a 1-year warranty for your peace of mind.
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